FILE - In this Monday, Jan. 11, 2021 file photo, Elementary 1 teacher Melissa Vozar sits outside of Suder Elementary in Chicago to teach a virtual class Monday, Jan. 11, 2021. Chicago Mayor Lori Lightfoot said Sunday, Feb. 7 that a “tentative agreement” has been reached with the teachers’ union over COVID-19 safety protocols, potentially averting a strike in the nation’s third-largest school district. (Anthony Vazquez/Chicago Sun-Times via AP, File)
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